Synthesis of core–shell PMMA–SiO2 nanoparticles with suspension–dispersion–polymerization in an aqueous system and its effect on mechanical properties of PVC composites

Autor:	Feng Zhao, Zhehua Shi, Aiping Zhu, Aiyun Cai, Tianqing Liao
Rok vydání:	2008
Předmět:	Dispersion polymerization Aqueous solution Materials science Polymers and Plastics Organic Chemistry Radical polymerization Nanoparticle Vinyl chloride chemistry.chemical_compound Polyvinyl chloride chemistry Suspension polymerization Composite material Methyl methacrylate
Zdroj:	Polymer Testing. 27:540-547
ISSN:	0142-9418
DOI:	10.1016/j.polymertesting.2007.11.005
Popis:	Well-dispersed core–shell poly(methyl methacrylate) (PMMA)–SiO2 nanoparticles were prepared in an aqueous solution by suspension–dispersion–polymerization (SDP). The particle size distribution, grafting efficiency and particle morphology were systematically investigated. It was found that the PMMA was grafted uniformly on the surface of SiO2. The mechanism to form the core–shell nanoparticles was discussed. The core–shell nanoparticles were subsequently used as filler in a poly (vinyl chloride) (PVC) matrix, and mechanical properties of the PMMA–SiO2/PVC composites were studied. Morphological structure of PVC composites revealed that PMMA covering on SiO2 improved the dispersion of SiO2 in the PVC matrix and enhanced the interfacial adhesion between the SiO2 and PVC. The results demonstrated that these core–shell PMMA–SiO2 nanosphere fillers could improve mechanical properties of the PVC matrix.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cdd79031a6101b0c02287859eaf42ac0 https://doi.org/10.1016/j.polymertesting.2007.11.005 Zobrazit plný text záznamu Full Text from ScienceDirect